Ardson



model.)

T. M. RICHARDSON. Thill Coupling. v

Patented Nov. 2,1880.

WITNESSES \NVENTCR f aadm 7%. 7 I

iii ATTORI\ EY llNiTnn STATES PATENT FFICQ THEODORE M. RICHARDSON, OF STOCKTON, MAINE, ASSIGNOR OF ONE-HALF TO LEWIS M. PARTRIDGE, OF SAME PLACE.

THlLL-COUPLING.

SPECIFICATION forming part of Letters Patent No. 234,067, dated November 2, 1880.

Application filed September 4, 1880. (ModeL) To all whom it may concern:

Be it known that I, THEODORE M. RIGH- ARDSON, of Stockton, in the county of Waldo and State of Maine, have invented a new and valuable Improvement in Shaft-Couplings; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being bad to the annexed drawings, making a part of this specification, and to the letters and figures of reference marked thereon.

Figure 1 of the drawings is a representation of a vertical central section of this invention. Fig. 2 is a detail view of the adjustable friction-plate. Fig. 3 is a plan view of the holder. Fig. 4 is a detail view of the pin-bearing.

This invention has relation to thill-couplings; and it consists in the construction and novel arrangement, in combination with the slotted thill end carrying a slotted disk-bearing in a circular seat of the axle-clip, its holder having cheeks supportingthe ends ofa squared draft pin or bearing, and a metallic frictionslide having an upwardly and reversely inclined front flange extending between the cheeks and engaging the rear branch of the thill end, all as hereinafter shown and described.

In the accompanying drawings, theletterA designates the axle and B the clip thereon. O is the holder, usually made of malleable cast-iron, perforated at a and b for the passage of the threaded ends 0 of the clip. In front the holder is forked, having bearingcheeks d, in the central portions of which are secured the squared ends of a squared pin'or bearing, D, the breadth of which is greater than its thickness. This pin extends transversely between the cheeks d, its broad sides beinginclined at an angle of about forty-five degrees backward, as shown in the drawings.

In the throat or front of the holder, between the checks, is formed a beveled seat, 0, to receive the upward and reversely inclined front flange, E, of the adjustable friction-plate F, which is made with a slot, g, through which one of the ends 0 of the clip passes, so that it is adjustable, its position being secured by the clip-nut h.

G indicates the iron thill end, having a shank portion, H, which is bolted to the under side of the end of the wooden shaft K, in which position it is out of the way, so that it does not mar the symmetry of the shaft. Its rear end, L, is expanded in circular form, having a shoulder, 70, which abuts against the shaft end, and a central circular hearing, I, having an offset slot or opening, m, in its under side opposite said shoulder, as shown in the drawings. This bearin g end L is therefore forked, and its rear branch, N, is rounded on its rear surface, as indicated at n, to form a hearing which is in contact with the forward bearingsurface of the reversely-incliued flange E of the friction-plate F when the parts are coupled together. 6

In the circular seatl is located the brass bearing-disk R, having in its under portion a slot, 8, corresponding in breadth to the offset slot of the iron thill end, which leads into said circular seat, and in its upper portion a groove, t, which extends around it circularly, and which, engaging with a setscrew, c, in the branch N, serves to hold the disk in place when the thills are disconnected from the holders.

It will be observed that the flange-bearing E and the transverse pin-bearing D between the cheeks are in parallel position, both being inclined, and the thill end is connected by holding the thills raised and slipping the forked end on the bearing D downward and forward. This bearing D being received in the slot of the bearing-disk It, the thills are turned forward into the position for draft. The slot of the thill end now being downward, all particles of soil will drop out.

The rear branch of the thill end receives the pressure of the friction-plate on its rear curved surface, while its inner or front face bears against the disk R which, in turn, bears against the broad side of the bearing-pin D, the inclined position of which causes it to set at right angles, or nearly at right angles, to the direction of the thill end.

I am aware that it is not new to employ a slotted bearing-disk and a rectangular trans- 5 verse bearing-pin engaging therewith in the construction of thill-couplings, and I do not desire to claim such devices, broadly; but

What I claim, and dvsirv to StCllIt} by Letbranch, N, of the thil] end, substantially as ters Patent, is specified.

The combination. with the forked thill 0nd t In testimony that I cfaim the above I have having the circular scat land the slottvd iwnrhereunto subscribed my name in the presence 5 ing-disk R, of the nxlv-t'lip 1;, the lmldvr (I, ot'two witnesses.

having the chveks (I, the squai'vd draft pin or t w a v hearing 1),:uul the adjustable slotted frimiun- Tnmmm MMSIIELD RICHARDSO) 4 plate I havin; an upwardly and rmorsvtv in- I \\'itnesscs: clined hearing-flange, E, vxtending lwtwuon LORING BLANCHARD SMALL,

[0 the holder-chooks and vngaging' tho roan", ELVIN FRENCH STAPLES. 

